diff -r 506ab2e8aeca -r c7d89541e3c5 server/sources/pyrorql.py
--- a/server/sources/pyrorql.py	Thu Feb 16 14:23:24 2012 +0100
+++ b/server/sources/pyrorql.py	Thu Feb 16 14:17:53 2012 +0100
@@ -1,4 +1,4 @@
-# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of CubicWeb.
@@ -367,7 +367,7 @@
         if cu is None:
             # this is a ConnectionWrapper instance
             msg = session._("can't connect to source %s, some data may be missing")
-            session.set_shared_data('sources_error', msg % self.uri)
+            session.set_shared_data('sources_error', msg % self.uri, txdata=True)
             return []
         translator = RQL2RQL(self)
         try:
@@ -383,7 +383,7 @@
         except Exception, ex:
             self.exception(str(ex))
             msg = session._("error while querying source %s, some data may be missing")
-            session.set_shared_data('sources_error', msg % self.uri)
+            session.set_shared_data('sources_error', msg % self.uri, txdata=True)
             return []
         descr = rset.description
         if rset: